Skip to main content
. Author manuscript; available in PMC: 2016 Dec 27.
Published in final edited form as: Green Chem. 2016 May 16;18(16):4407–4419. doi: 10.1039/c6gc01147k

Figure 4.

Figure 4

Physico-chemical data-integrative grouping of petroleum substances. mass % evaporation data (in 50°c increments) for concawe samples from four product groups (srgo, ogo, vhgo, and rae) were integrated in toxpi to yield evaporation profiles, as well as a chemical ranking according to their overall volatility, i.e. mass % evaporation data derived toxpi score (a). potential correlations in the originating data set were analyzed using the hclust function in r (b). physico-chemical data derived toxpi scores were subsequently correlated with bioactivity data-derived toxpi scores (c). [vhgo = vacuum & hydrotreated gas oils; srgo = straight run gas oils; ogo = other gas oils; rae = residual aromatic extracts].